Good job wanting to put in the work to increase your vertical. My first advice is to be consistent. If you are, then you'll definitely gain.
My second piece of advice is to just concentrate of hitting the weights. You're only 13, so some people will argue that you shouldnt, but I disagree. You need the raw horsepower(which kelly baggett talks about a lot) in order to get your body into the air. If I were training you, I'd have you just concentrate on getting stronger. Bodyweight exercises will help you for a little bit, and the jumping will help you too, but if you gain more raw horsepower(add strength/upping your relative strength) the jumping will help you out even more.

Do you have heavy bags or a car you could push? Getting stronger is all about giving your body stimulus. You can do that by doing a lot of things, you don't have to necessarily just hit the weights, even though its the most practical. If you can get creative, you could still get a lot stronger.

But you should pay for it if you have the money, and you shouldn't necessarily do the same program as me depending on your needs(The ebook will help you find which program you should do) and you should read the whole thing once before starting.

Do you have heavy bags or a car you could push? Getting stronger is all about giving your body stimulus. You can do that by doing a lot of things, you don't have to necessarily just hit the weights, even though its the most practical. If you can get creative, you could still get a lot stronger.

But you should pay for it if you have the money, and you shouldn't necessarily do the same program as me depending on your needs(The ebook will help you find which program you should do) and you should read the whole thing once before starting.